42 THE ACCLIMATISATION 



and thousands of young fry have been dis- 

 tributed to other rivers. This is probably 

 the first and only instance in which a mi- 

 gratory salmonid has proved fertUe with- 

 out having been to the sea. There is some, 

 though perhaps not conclusive, evidence- 

 that 8almo salar have also bred in these 

 ponds, and it amounts to this : two young 

 Specimens bred there were sent to England 

 for Dr. Giinther's opinion, and he was fully 

 informed of their origin, and, while reluc- 

 tant to express a decided opinion that they 

 were true salmon, he said that they pre- 

 sented all the anatomical characteristics of 

 that species. It is quite likely that some 

 of the salmon fry found their way into the 

 salmon-trout pond unobserved, for the in- 

 closures appear to have been separated only 

 by a grating with a common supply of 

 water from the river. 



Dr. Giinther refers in the " Catalogue of 

 British Fishes " to the experiments made 

 in Wales, and says that the evidence that 

 the young fish made use of were of a migra- 

 tory species, or that the fall-grown fish 



